h1 {
    text-align: center;
    background-color: crimson;
    b
}

.media-object {
    width: 400px;
    height: 400px;
}

.num {
    width: 73px;
    height: 73px;
    font-size: 16px;
    text-align: center;
    display: block;
    margin: 50px 0 0 0;
    font-size: 20px;
    color: #000;
}

.jian {
    position: absolute;
    width: 40px;
    height: 40px;
    top: 0;
    left: 82px;
}

.jia {
    width: 40px;
    height: 40px;
    position: absolute;
    top: 38px;
    left: 82px;
}